CMake fails when using YCM master branch

[S-Dafarra]

Steps to reproduce:

• git clone https://github.com/robotology/robotology-superbuild
• cd robotology-superbuild/ && mkdir build && cd build/ && cmake ../
• cd ../src/YCM/
• git checkout master
• cd ../../build
• cmake .

Then, I get the following error

-- YCM not found. Bootstrapping it.
-- Downloading YCMEPHelper.cmake - Attempt 1 of 3
-- Downloading YCMEPHelper.cmake - SUCCESS
-- Downloading StyleGITHUB.cmake - Attempt 1 of 3
-- Downloading StyleGITHUB.cmake - SUCCESS
-- Performing download step (git clone) for 'YCM'
-- Performing update step for 'YCM'
CMake Error at build/CMakeFiles/YCMEPHelper.cmake:1377 (message):
  Cannot update YCM repository
Call Stack (most recent call first):
  cmake/YCMBootstrap.cmake:114 (ycm_bootstrap)
  CMakeLists.txt:56 (include)


-- Configuring incomplete, errors occurred!
See also "/home/sdafarra/Software/temp/robotology-superbuild/build/CMakeFiles/CMakeOutput.log".
See also "/home/sdafarra/Software/temp/robotology-superbuild/build/CMakeFiles/CMakeError.log".

[traversaro]

I can't reproduce the issue, I guess it was some kind of temporary problem on YCM master. I will close this issue, but feel free re-open if the problem persists.

[mebbaid]

I am trying to make a docker image, and part of the Dockerfile I do;

RUN git clone https://github.com/robotology/robotology-superbuild.git && \
    cd robotology-superbuild && \
    git checkout v2021.08.1 && \
    mkdir -p build && cd build &&\
    cmake -GNinja \
    -DCMAKE_BUILD_TYPE=Release \
    -DNON_INTERACTIVE_BUILD:BOOL=ON \
    -DROBOTOLOGY_ENABLE_CORE:BOOL=ON \
    -DROBOTOLOGY_ENABLE_DYNAMICS:BOOL=ON \
    -DROBOTOLOGY_USES_GAZEBO:BOOL=ON \
    -DROBOTOLOGY_USES_OCTAVE:BOOL=OFF \
    -DROBOTOLOGY_USES_PYTHON:BOOL=OFF \
    -DROBOTOLOGY_USES_MATLAB:BOOL=OFF \
    -DROBOTOLOGY_ENABLE_DYNAMICS_FULL_DEPS:BOOL=ON .. && \
    cmake --build . && \
    cd ../src/bipedal-locomotion-framework && \
    git checkout 6cfe29fcfdd5c598bb0baa809b91c96139e4bcf1 && \
    cp /home/$USERNAME/ReducedModelControllers/* /src/ReducedModelControllers/* && \
    cd ../icub-models && \
    cp /home/$USERNAME/icub-models.patch . && \
    git apply ./icub-models.patch && \
    cd ../../build/src/bipedal-locomotion-framework && \
    cmake . && cmake --build . --target install && \
    cd ../icub-models && \
    cmake . && cmake --build . --target install && \
    cd /home/${USERNAME}/robotology-superbuild/build && \
    find . -mindepth 1 ! -regex '^./install\(/.*\)?' -delete

For which when i run docker build, I get the same error above; i.e. the output in the terminal is

-- YCM not found. Bootstrapping it.
-- Downloading YCMEPHelper.cmake - Attempt 1 of 3
-- Downloading YCMEPHelper.cmake - SUCCESS
-- Downloading CMakeParseArguments.cmake - Attempt 1 of 3
-- Downloading CMakeParseArguments.cmake - SUCCESS
-- Downloading ExternalProject.cmake - Attempt 1 of 3
-- Downloading ExternalProject.cmake - SUCCESS
-- Downloading StyleGITHUB.cmake - Attempt 1 of 3
-- Downloading StyleGITHUB.cmake - SUCCESS
-- Performing download step (git clone) for 'YCM'
-- Performing update step for 'YCM'
-- Performing configure step for 'YCM'
-- Performing uninstall step for 'YCM'
-- Performing build step for 'YCM'
CMake Error at build/CMakeFiles/YCMEPHelper.cmake:1411 (message):
  Cannot build YCM
Call Stack (most recent call first):
  cmake/YCMBootstrap.cmake:102 (ycm_bootstrap)
  CMakeLists.txt:56 (include)


-- Configuring incomplete, errors occurred!
See also "/home/user/robotology-superbuild/build/CMakeFiles/CMakeOutput.log".

Note that I am trying to build the robotology-superbuild with the release-tag v2021.08.1 in this case.

Any hints on how to proceed forward.

[traversaro]

@mebbaid Can you please open a new issue? Cannot build YCM is quite the generic error, so it is possible that your error is completly unrelated from the original one of @S-Dafarra, and in general it is tricky to work on closed issues, because you do not know when the "new reply" is addressed or not.

Anyhow, two suggestions:

First Suggestion

You can configure cmake with -DYCM_BOOTSTRAP_VERBOSE:BOOL=ON to get a more verbose error on what is going on.

Second Suggestion

Unfortunatly the YCM bootstrap was intrinsically quite fragile, especially before the improvements in robotology/ycm-cmake-modules#403 and robotology/ycm-cmake-modules#402 . However, you can almost the same behaviour by manually compiling the exact version of YCM before compiling the superbuild (that is 0.13.0, see https://icub-tech-iit.github.io/documentation/sw_versioning_table/2021.08.1/), so that the superbuild will find the installed YCM:

git clone -b v0.13.0 https://github.com/robotology/ycm
cd ycm
mkdir -p build && cd build && cmake -GNinja .. & ninja install

this should either work, or at least provide a more easy error to deal with.

[traversaro]

Actually v0.13.0 probably will not work due to robotology/ycm-cmake-modules#419 . Probably you can download and extract the offline archive (https://github.com/robotology/ycm/releases/download/v0.13.0/ycm-0.13.0-offline.tar.gz) as a workaround.

[mebbaid]

Indeed that was the issue. Thanks for the help !!